include: Don't use the printf format attribute when compiling against msvcrt and not cross-compiling.

Since it will spit out bogus warnings in the case we use Microsoft-specific
extensions.

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

include/wine/debug.h

@@ -88,7 +88,11 @@ struct __wine_debug_channel
 #define __WINE_DBG_LOG(args...) \
     wine_dbg_log( __dbcl, __dbch, __FUNCTION__, args); } } while(0)
 
+#if !defined(__WINE_USE_MSVCRT) || defined(__MINGW32__)
 #define __WINE_PRINTF_ATTR(fmt,args) __attribute__((format (printf,fmt,args)))
+#else
+#define __WINE_PRINTF_ATTR(fmt,args)
+#endif
 
 
 #ifdef WINE_NO_TRACE_MSGS